EP2889090B1 - Plug for hot pipe manufacturing - Google Patents

Plug for hot pipe manufacturing Download PDF

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Publication number
EP2889090B1
EP2889090B1 EP13830574.3A EP13830574A EP2889090B1 EP 2889090 B1 EP2889090 B1 EP 2889090B1 EP 13830574 A EP13830574 A EP 13830574A EP 2889090 B1 EP2889090 B1 EP 2889090B1
Authority
EP
European Patent Office
Prior art keywords
plug
connection member
column
shaped portion
joining hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP13830574.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2889090A1 (en
EP2889090A4 (en
Inventor
Kouji Yamane
Kazuhiro Shimoda
Tomio Yamakawa
Yuji Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of EP2889090A1 publication Critical patent/EP2889090A1/en
Publication of EP2889090A4 publication Critical patent/EP2889090A4/en
Application granted granted Critical
Publication of EP2889090B1 publication Critical patent/EP2889090B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Definitions

  • the present invention relates to a plug for hot pipe making (hereinafter, simply referred to as a plug), and particularly, relates to a plug included in a piercing machine (piercer) and an elongator.
  • a Mannesmann pipe making process is widely used as a manufacturing method for a seamless metal pipe.
  • a round billet heated at approximately 1200°C is piercing-rolled by a piercing machine (piercer).
  • the piercing machine includes a pair of inclined rolls and a plug.
  • the plug is disposed on a pass line between the pair of inclined rolls.
  • the round billet is pushed into the plug while rotating in the circumferential direction of the round billet due to the rotation of the inclined rolls, the round billet is piercing-rolled, and thus, a hollow pipe stock (hollow shell) is formed.
  • an elongator drawing-rolls the hollow pipe stock if necessary, and thus, a diameter of the hollow pipe stock is increased and the thickness thereof is thinned.
  • the elongator includes a configuration similar to the piercing machine, and includes a pair of inclined rolls and a plug.
  • the plug since the plug pierces the round billet having a high temperature and increases the diameter thereof, the plug obtains a high temperature and a high contact pressure from the round billet. Accordingly, the surface of the plug becomes worn or seized. Particularly, since a head portion of the plug comes into contact with the round billet from the front surface of the round billet, a portion of the head portion of the plug may be melted and scraped off. That is, a portion of the plug may be eroded.
  • the eroded plug is used in hot pipe making such as the piercing-rolling or the drawing-rolling, scratches are easily formed on the inner surface of the piercing-rolled or drawing-rolled round billet (hollow pipe stock). Accordingly, if the head portion of the plug is eroded, even when a plug main body other than the head portion is not eroded, the plug should be exchanged.
  • Patent Documents 1 to 5 technologies are disclosed in which the head portion of the plug is divided from the plug main body to be a separate body, and a material having superior wear resistance, seize resistance, and erosion resistance is used for the head portion.
  • a tip portion of the plug is formed of Nb base alloy. Moreover, the tip portion is fixed to a plug main body by shrinkage fitting.
  • a tip portion of the plug is formed of molybdenum or molybdenum alloy.
  • the tip portion is fixed to a plug main body by shrinkage fitting or bonding.
  • a tip portion of the plug is formed of ceramic such as ZrO 3 .
  • the tip portion is fixed to a plug main body by shrinkage fitting or bonding.
  • a tip portion of the plug is formed of heat-resistant alloy having a high melting point and high strength.
  • the mounting method of the tip portion is not particularly described.
  • a tip portion of the plug is formed of a ceramic. Moreover, the tip portion is interposed by a holding member using a bolt, screwed into the plug main body, and fixed thereto in a state where the tip portion is fixed by a mounting member.
  • the tip portion of the plug is formed of a material having superior erosion resistance, and thus, a life span of the plug can be lengthened.
  • the tip portion of the plug is fixed to the plug main body by shrinkage fitting, a bonding agent or a mounting member. Accordingly, in the technologies of Patent Documents 1 to 5, if the tip portion of the plug is eroded or the plug main body is eroded, it is difficult to exchange only the tip portion or only the plug main body of the plug (that is, maintenance becomes difficult).
  • the present invention is made in consideration of the above-described circumstances, and an object thereof is to provide a plug for hot pipe making in which a partial exchange is easily performed and maintenance becomes easier.
  • the present invention adopts the following means to solve the problems and to achieve the related object.
  • connection member since the connection member does not protrude from the mounting hole to the outside, during the joining and the heat pipe making, the connection member is not easily damaged.
  • FIG. 1 is an overall configuration view of the piercing machine 1. As shown in FIG. 1 , the piercing machine 1 includes a pair of inclined rolls 2, a plug 11, and a mandrel 3.
  • the pair of inclined rolls 2 is disposed around a pass line PL.
  • the inclined rolls 2 roll a round billet BL while rotating the round billet in the circumferential direction.
  • the inclined rolls 2 may be a cone type or a barrel type.
  • the plug 11 is disposed on the pass line PL between the pair of inclined rolls 2.
  • the mandrel 3 has a rod shape and is disposed on the pass line PL.
  • the plug 11 is attached to a tip of the mandrel 3.
  • the mandrel 3 fixes the plug 11 on the pass line PL.
  • the plug 11 When the round billet BL is piercing-rolled by the piercing machine 1, the plug 11 is pushed into a center of a front end surface (that is, an end surface opposing the plug 11) of the round billet BL, pierces the round billet BL, and forms a hollow pipe stock BL.
  • a cross-sectional shape of an outer circumferential surface of the plug 11 is a circle, and an outer diameter of a rear end of the plug 11 is larger than that of a tip of the plug 11.
  • the plug 11 has a shell shape.
  • FIG. 2 is a longitudinal cross-sectional view of the plug 11.
  • the longitudinal cross-sectional view means a cross-section including a center axis CL of the plug 11.
  • the plug 11 includes a head member 21 and a plug main body 31 in this order from the tip.
  • the head member 21 and the plug main body 31 are plug pieces which are attachable to and detachable from each other.
  • the plug 11 is configured by connection between the plug pieces (that is, in the first embodiment, connection between the head member 21 and the plug main body 31).
  • the head member 21 is pushed into the round billet BL during the piercing-rolling, and forms a hole in a center axis direction of the round billet BL.
  • the head member 21 includes a tip surface 201.
  • a longitudinal sectional shape of the tip surface 201 is a convex bow shape. As shown in FIG. 3 , the head member 21 is attachable to and detachable from the plug main body 31.
  • the plug main body 31 provides the round billet BL (hereinafter, also may be referred to as a hollow pipe stock BL) having a hole formed by the head member 21 with desired dimensions (outer diameter and thickness). Specifically, the plug main body 31 comes into contact with the hollow pipe stock BL and increases an inner diameter of the hollow pipe stock BL. In addition, the plug main body 31 interposes the hollow pipe stock BL between the plug main body 31 and the inclined rolls 2 to roll the hollow pipe stock BL, and makes the thickness of the hollow pipe stock BL be a desired thickness.
  • the plug main body 31 includes a rolling portion 301, a reeling portion 302, and a relief portion 303 in this order from the tip side of the plug 11.
  • the cross-sectional shapes (that is, the cross-sectional shape orthogonal to the center axis of the plug 11) of the rolling portion 301 and the reeling portion 302 are circles.
  • the outer diameters of the rolling portion 301 and the reeling portion 302 gradually increase from the tip of the plug 11 toward the rear end.
  • the rolling portion 301 increases the inner diameter of the hollow pipe stock BL during the piercing-rolling.
  • the longitudinal sectional shape of the outer surface of the rolling portion 301 is an arc which has one or a plurality of curvatures.
  • the reeling portion 302 makes the thickness of the hollow pipe stock BL be a desired thickness.
  • the outer surface shape of the reeling portion 302 is a tapered shape.
  • the relief portion 303 prevents occurrence of scratches on the inner surface of the hollow pipe stock BL.
  • the outer diameter of the relief portion 303 is constant, or gradually decreases from the tip of the plug 11 toward the rear end. Accordingly, the relief portion 303 does not easily come into contact with the inner surface of the hollow pipe stock BL during the piercing-rolling, and can prevent occurrence of scratches on the inner surface of the hollow pipe stock BL.
  • the plug main body 31 may not have the relief portion 303.
  • the outer surface shapes of the rolling portion 301 and the reeling portion 302 are not limited to the above-described shape.
  • a material of the head member 21 may be the same as the plug main body 31, or may be different from the plug main body.
  • the material of the head member 21 may be a material different from the plug main body 31, and at least one of wear resistance, seize resistance, and erosion resistance of the head member may be better than with the material of the plug main body 31.
  • the plug 11 includes a joint structure JS1 at a joint portion between the head member 21 and the plug main body 31.
  • the joint structure JS1 includes a connection member 40.
  • the connection member 40 has a magnetic force and detachably connects the head member 21 to the front end of the plug main body 31 by the magnetic force.
  • the joint structure JS 1 will be described in detail.
  • the head member 21 includes a joint portion JP21 on the rear end.
  • the plug main body 31 includes a joint portion JP31 on the front end.
  • the joint portion JP21 is joined to the joint portion JP31.
  • the joint portions JP21 and JP31 configure the joint structure JS1.
  • One of the joint portions JP21 and JP31 includes a column-shaped portion CO1, and the other includes a joining hole HO1.
  • the joint portion JP21 (that is, the head member 21) includes the column-shaped portion CO1
  • the joint portion JP31 (that is, the plug main body 31) includes the joining hole HO1. That is, in the first embodiment, the head member 21 includes the column-shaped portion CO1, and the plug main body 31 includes the joining hole HO1 into which the column-shaped portion CO1 is inserted.
  • the column-shaped portion CO1 extends in the direction of the axis CL of the plug 11 from a rear end surface 202 of the head member 21.
  • the cross-sectional shape of the column-shaped portion CO1 is a circle.
  • the column-shaped portion CO1 includes an outer circumferential surface CS1 and an end surface CE1 as a surface.
  • the joining hole HO1 is formed on a front end surface 310 of the plug main body 31, and extends in the direction of the axis CL.
  • the cross-sectional shape of the joining hole HO1 is a circle.
  • the joining hole HO1 includes an inner circumferential surface HS1 and a bottom surface HB1 as a surface.
  • the column-shaped portion CO1 is inserted into the joining hole HO1.
  • the outer circumferential surface CS1 opposes the inner circumferential surface HS1, and the end surface CE1 opposes the bottom surface HB1.
  • the connection member 40 is attached to the outer circumferential surface CS1 of the column-shaped portion CO1, and connects the column-shaped portion CO1 to the joining hole HO1 by the magnetic force. Accordingly, the head member 21 and the plug main body 31 are detachably connected to each other.
  • connection member 40 is a magnet, and more specifically, is a permanent magnet. Meanwhile, a material of at least the joint portion JP31 in the plug main body 31 is a magnetic body, and more specifically, is a ferromagnetic body.
  • the plug 11 can detachably connect the head member 21 to the plug main body 31 using the magnetic force of the connection member 40 included in the joint structure JS1.
  • the joint structure between the head member and the plug main body becomes complicated, and strength of the joint structure is easily decreased. Accordingly, the joint structure may be damaged during the piercing-rolling.
  • the head member 21 is connected to the plug main body 31 by the magnetic force using the connection member 40. Accordingly, the joint structure JS1 has a simple structure (column-shaped portion CO1 and joining hole HO1), and thus, the plug is not easily damaged during the piercing-rolling.
  • the head member 21 since the head member 21 is connected to the plug main body 31 by the magnetic force in the joint structure JS1 (also since the cross-sectional shapes of the column-shaped portion CO1 and the joining hole HO1 are circular shapes), the head member 21 can freely rotate around the axis CL during the piercing-rolling.
  • the head member in the case where the head member is fixed to the plug main body by shrinkage fitting, a bonding agent, and a mounting member such as a screw, when the head member receives an external force (torsion) in the circumferential direction from the round billet, the head member cannot rotate. Accordingly, the joint structure is easily damaged.
  • the joint structure JS 1 the head member 21 receiving the external force in the circumferential direction freely rotates in the circumferential direction. Accordingly, the damage to the joint structure JS1 can be prevented.
  • connection member 40 having the magnetic force is attached to the head member 21.
  • the material of the head member 21 may not be a ferromagnetic body. Therefore, a nonmagnetic high-strength heat-resistant material including Nb base alloy or Mo base alloy may be used as the material of the head member 21. In addition, a nonmagnetic material such as a ceramic may be also used as the material of the head member 21.
  • the tip surface 201 of the plug 11 and the outer layer portion in the vicinity thereof obtain a high temperature from the round billet BL, and the temperature becomes a high temperature of approximately 1000°C during the piercing-rolling. However, in other regions except for the outer layer portion, the temperature is less than or equal to 300°C even during the piercing-rolling. Accordingly, the connection member 40 has the magnetic force even during the piercing-rolling, and ferromagnetism of the plug main body 31 is maintained.
  • the head member 21 can be easily attached to and detached from the plug main body 31.
  • the head member 21 can be easily removed from the plug main body 31, and a new head member 21 can be easily connected to the plug main body 31 in a short amount of time. That is, the exchange of the head member 21 or the plug main body 31 is easily performed. In this way, in the plug 11 according to the first embodiment, a partial exchange is easily performed, and the maintenance becomes easier. As a result, a life span of the plug 11 can be lengthened.
  • FIG. 5 is a cross-sectional view taken along line V-V of FIG. 3 .
  • a groove GR1 is formed on the outer circumferential surface CS1 of the column-shaped portion CO1.
  • the groove GR1 extends around the axis CL and includes a groove bottom GB1.
  • connection member 40 is fixed to the groove GR1 by a well-known method.
  • the connection member 40 may be fixed to the groove GR1 by shrinkage fitting, or may be fixed to the groove GR1 using a bonding agent.
  • the connection member 40 may be fixed to the groove GR1 using a fixing member such as a screw or a bolt.
  • one or more connection members 40 may be disposed on the groove GR1.
  • a surface 40S of the connection member 40 inserted into and attached to the groove GR1 is disposed to be closer to the groove bottom GB1 side than the outer circumferential surface CS1 of the column-shaped portion CO1.
  • the connection member 40 is fitted to the groove GR1 so that a gap is generated between the surface 40S of the connection member 40 and an opening surface (a surface which is flush with the outer circumferential surface CS1 of the column-shaped portion CO1) of the groove GR1. In this configuration, the connection member 40 does not protrude from the outer circumferential surface CS1 to the outside.
  • connection member 40 does not easily come into contact with the inner circumferential surface HS1 of the joining hole HO1. As a result, during the joining or during piercing-rolling, cracks or damage to the connection member 40 can be prevented.
  • connection member 40 is attached at a position away from the rear end (rear end surface CE1) of the column-shaped portion CO1. As a result, during the joining, the connection member 40 does not come into contact with the bottom surface HB1 of the joining hole HO1, and instead, the rear end surface CE1 comes into contact with the bottom surface HB1.
  • the plug 11 is pushed into the round billet BL. At this time, the plug 11 receives a strong external force in the direction of the axis CL. The head member 21 is pressed to the plug main body 31 by the external force.
  • connection member 40 is attached to the rear end of the outer circumferential surface CS1 and the connection member 40 comes into contact with the bottom surface HB1 during the joining, the connection member 40 is pressed to the bottom surface HB1 by the external force. As a result, the connection member 40 is easily damaged.
  • connection member 40 is attached at a position away from the rear end of the outer circumferential surface CS1, the external force applied in the direction of the axis CL during the piercing-rolling is applied to the rear end surface CE1 and is not easily applied to the connection member 40. As a result, the connection member 40 is not easily damaged.
  • a size of the head member 21 is not particularly limited.
  • the head member 21 may have a length equal to or more than 1/3 of that of the plug 11 from the tip.
  • the surface of the head member 21 may include not only the rolling portion but also the reeling portion.
  • the plug main body 31 can be divided into a front portion 350 and a rear portion 360, and the front portion 350 and the rear portion 360 may include a joint structure JS10 having a configuration similar to the joint structure JS1. That is, a plurality of joint structures JS1 may be provided on the plug 11. Similar to the joint structure JS1, the joint structure JS10 includes the column-shaped portion CO1 and the joining hole HO1, and includes the connection member 40.
  • the front portion 350 and the rear portion 360 of the plug main body 31, and the tip material 21 are plug pieces which can be attached to and detached from each other. That is, the number of the plug pieces configuring the plug 11 may be two as shown in FIG. 2 and may be three as shown in FIG. 7 . Moreover, the number of the plug pieces configuring the plug 11 may be four or more.
  • connection member 40 is attached to the outer circumferential surface CS1 of the column-shaped portion CO1.
  • the plug may include a joint structure having a configuration other than the joint structure JS1.
  • FIG. 8 is a longitudinal cross-sectional view of a joint structure of a plug 12 according to a second embodiment.
  • the plug 12 includes a head member 22 and a plug main body 32.
  • the plug 12 includes a new joint structure JS2 instead of the joint structure JS1.
  • Other configurations of the plug 12 are the same as the plug 11.
  • the head member 22 includes a joint portion JP22 instead of the joint portion JP21.
  • Other configurations of the head member 22 are the same as the head member 21.
  • the joint portion JP22 includes a column-shaped portion CO2. Compared to the column-shaped portion CO1, in the column-shaped portion CO2, a groove is not formed on an outer circumferential surface CS2, and the connection member 40 is not attached to the column-shaped portion.
  • Other configurations of the column-shaped portion CO2 are the same as the column-shaped portion CO1.
  • the plug main body 32 includes a joint portion JP32 instead of the joint portion JP31. Other configurations of the plug main body 32 are the same as the plug main body 31.
  • the joint portion JP32 includes a joining hole HO2. Compared to the joining hole HO1, in the joining hole HO2, the groove GR2 is formed on an inner circumferential surface HS2, and the connection member 40 is attached to the groove GR2. Other configurations of the joining hole HO2 are the same as the joining hole HO1.
  • connection members 40 are attached not to the outer circumferential surface CS2 of the column-shaped portion CO2 but to the inner circumferential surface HS2 of the joining hole HO2. Accordingly, the material of the joint portion JP21 to which the connection member 40 is not attached, that is, the material of at least the column-shaped portion CO2 of the head member 22 is a ferromagnetic body.
  • the joint structure JS2 having the above-described configuration also can connect the head member 22 to the plug main body 32 by the magnetic force.
  • the groove GR2 extends around the axis CL. Accordingly, the plurality of connection members 40 are disposed around the axis CL. As a result, the area which is adsorbed by the magnetic force is increased, and thus, the connection force is increased.
  • the surface 40S of the connection member 40 is disposed to be closer to the groove bottom GB2 side than the inner circumferential surface HS2.
  • the connection member 40 is fitted to the groove GR2 so that a gap is generated between the surface 40S of the connection member 40 and an opening surface (a surface which is flush with the inner circumferential surface HS2 of the joining hole HO2) of the groove GR2.
  • FIG. 9 is a longitudinal cross-sectional view of a joint structure JS3 of a plug 13 according to a third embodiment.
  • the plug 13 includes the head member 21 and the plug main body 32.
  • the joint structure JS3 is configured of the joint portion JP21 and the joint portion JP32. That is, in the joint structure JS3, the connection members 40 are attached to both the outer circumferential surface CS1 of the column-shaped portion CO1 and the inner circumferential surface HS2 of the joining hole HO2.
  • connection member 40 of the outer circumferential surface CS1 and the connection member 40 of the inner circumferential surface HS2 are disposed to oppose each other, and thus, are disposed to be attracted to each other. Accordingly, the head member 21 is connected to the plug main body 32 by the magnetic force.
  • a nonmagnetic material may be used.
  • the joint portions JP21 and JP22 of the head members 21 and 22 include the column-shaped portions CO1 and CO2, and the joint portions JP31 and JP32 of the plug main bodies 31 and 32 include the joining holes HO1 and HO2.
  • the column-shaped portion CO is disposed on the plug main body and the joining hole HO is disposed on the head member, effects similar to the first to third embodiments can be obtained.
  • FIG. 10 is a longitudinal cross-sectional view of a joint structure JS4 of a plug 14 according to a fourth embodiment.
  • the plug 14 includes a head member 24 and a plug main body 34.
  • the plug 14 includes a new joint structure JS4 instead of the joint structure JS 1.
  • Other configurations of the plug 14 are the same as the plug 11.
  • the head member 24 includes a joint portion JP24 instead of the joint portion JP21.
  • Other configurations of the head member 24 are the same as the head member 21.
  • the joint portion JP24 includes a joining hole HO4.
  • the joining hole HO4 extends in the direction of the axis CL from a rear end surface 242 of the head member 24, and includes an inner circumferential surface HS4 and a bottom surface HB4 as a surface.
  • the plug main body 34 includes a joint portion JP34 instead of the joint portion JP31.
  • Other configurations of the plug main body 34 are the same as the plug main body 31.
  • the joint portion JP34 includes a column-shaped portion CO4.
  • the column-shaped portion CO4 extends in the direction of the axis CL from a front surface 341 of the plug main body 34, and includes an outer circumferential surface CS4 and a front end surface CE4 as a surface. During the joining, the column-shaped portion CO4 is inserted into the joining hole HO4.
  • a groove GR4 extending around the axis CL is formed on the inner circumferential surface HS4 of the joining hole HO4, and a plurality of connection members 40 are inserted into the groove GR4 and are attached to the groove.
  • the head member 24 can be connected to the plug main body 34 by the magnetic force of the connection member 40.
  • the material of the plug main body 34 is a ferromagnetic body.
  • the surface 40S of the connection member 40 is disposed to be closer to the groove bottom GB4 side of the groove GR4 than the inner circumferential surface HS4.
  • the connection member 40 is fitted to the groove GR4 so that a gap is generated between the surface 40S of the connection member 40 and an opening surface (a surface which is flush with the inner circumferential surface HS4 of the joining hole HO4) of the groove GR4.
  • FIG. 11 is a longitudinal cross-sectional view of a joint structure JS5 of a plug 15 according to a fifth embodiment.
  • the plug 15 includes a head member 25 and a plug main body 35.
  • the plug 15 includes a joint structure JS5 instead of the joint structure JS4.
  • the head member 25 includes ajoint portion JP25 instead of the joint portion JP24.
  • Other configurations of the head member 25 are the same as the head member 24.
  • the plug main body 35 includes a joint portion JP35 instead of the joint portion JP34.
  • Other configurations of the plug main body 35 are the same as the plug main body 34.
  • the joint portion JP25 of the head member 25 includes a joining hole HO5, and the joint portion JP35 of the plug main body 35 includes a column-shaped portion CO5.
  • connection member 40 is attached not to the joining hole HO5 but to the column-shaped portion CO5.
  • a groove GR5 extending around the axis CL is formed on the column-shaped portion CO5.
  • the connection member 40 is inserted into the groove GR5 and is attached to the groove.
  • the material of the head member 25 is a ferromagnetic body.
  • the plug may include the head member 24 and the plug main body 35.
  • the connection member 40 attached to the head member 24 and the connection member 40 attached to the plug main body 35 are disposed to oppose each other during the joining, and thus, are disposed to be attracted to each other.
  • one of the joint portion of the head member and the joint portion of the plug main body includes the column-shaped portion CO, and the other includes the joining hole HO.
  • the connection member 40 may be attached to at least one of the outer circumferential surface CS of the column-shaped portion CO and the inner circumferential surface HS of the joining hole HO.
  • the material of the other joint portion different from the joint portion to which the connection member 40 is attached may be a ferromagnetic body. According to the joint structure JS having the above-described configuration, the head member can be connected to the plug main body by the magnetic force of the connection member 40.
  • connection member 40 is attached to at least one of the outer circumferential surface CS of the column-shaped portion CO and the inner circumferential surface HS of the joining hole HO.
  • connection member 40 may be attached to other portions.
  • FIG. 12 is a longitudinal cross-sectional view of a joint structure JS7 of a plug 17 according to a seventh embodiment.
  • the plug 17 includes a head member 27 and a plug main body 37.
  • the plug 17 includes a new joint structure JS7 instead of the joint structure JS1.
  • Other configurations of the plug 17 are the same as the plug 11.
  • the head member 27 includes a joint portion JP27 instead of the joint portion JP21. Other configurations of the head member 27 are the same as the head member 21.
  • the joint portion JP27 includes a column-shaped portion CO7.
  • the plug main body 37 includes a joint portion JP37 instead of the joint portion JP31, and other configurations of the plug main body 37 are the same as the plug main body 31.
  • the joint portion JP37 includes a joining hole HO7.
  • the column-shaped portion CO7 includes an outer circumferential surface CS7 and a rear end surface CE7 as a surface.
  • the joining hole HO7 includes an inner circumferential surface HS7 and a bottom surface HB7 as a surface.
  • the column-shaped portion CO7 is inserted into the joining hole HO7. At this time, a rear end surface CE7 of the column-shaped portion CO7 opposes a bottom surface HB7 of the joining hole HO7, and preferably, comes into contact with the bottom surface HB7.
  • connection member 40 is attached to the rear end surface CE7 of the column-shaped portion CO7.
  • the connection member 40 is formed in a plate shape.
  • a plurality of connection members 40 may be attached to the joining hole HO7.
  • Amounting hole HO70 including a bottom surface HB70 is formed on the rear end surface CE7, and the connection member 40 is disposed in the mounting hole HO70, and is attached by shrinkage fitting or a bonding agent.
  • connection member 40 is attached to the rear end surface CE7 of the column-shaped portion CO7.
  • the material of the joint portion JP37 of the plug main body 37 is a ferromagnetic body.
  • joint structure JS7 having the above-described configuration can also connect the head member 27 to the plug main body 37 by the magnetic force of the connection member 40.
  • the surface 40S (the surface opposing the bottom surface HB7) of the connection member 40 is disposed to be closer to the bottom surface HB70 side than the rear end surface CE7.
  • the connection member 40 is inserted into the mounting hole HO70 so that a gap is generated between the surface 40S of the connection member 40 and an opening surface (a surface which is flush with the rear end surface CE7 of the column-shaped portion CO7) of the mounting hole HO70.
  • the plug 17 receives a strong external force in the direction of the axis CL during the piercing-rolling. Accordingly, the rear end surface CE7 is strongly pressed while coming into contact with the bottom surface HB7. If the connection member 40 protrudes from the rear end surface CE7 to the outside, since the connection member 40 comes into contact with the bottom surface HB7, the connection member 40 may be damaged during the piercing-rolling. If the surface 40S of the connection member 40 is disposed to be closer to the bottom surface HB70 side than the rear end surface CE7, the damage of the connection member 40 can be suppressed.
  • connection member 40 may not be attached to the rear end surface CE7 and may be attached to the bottom surface HB7 of the joining hole HO7.
  • a mounting hole for inserting the connection member 40 into the bottom surface HB7 is also formed on the bottom surface.
  • the material of the joint portion JP27 (column-shaped portion CO7) of the head member 27 is a ferromagnetic body.
  • connection members 40 may be attached to both the rear end surface CE7 of the column-shaped portion CO7 and the bottom surface HB7 of the joining hole HO7.
  • the connection member 40 of the rear end surface CE7 and the connection member 40 of the bottom surface HB7 are disposed to oppose each other, and are disposed to be attracted to each other.
  • the joint portion JP27 of the head member 27 may include the joining hole HO7 instead of the column-shaped portion CO7
  • the joint portion JP37 of the plug main body 37 may include the column-shaped portion CO7 instead of the joining hole HO7.
  • the connection member 40 is attached to at least one of a front end surface CE7 of the column-shaped portion CO7 and a bottom surface HB7 of the joining hole HO7.
  • one of the joint portion of the head member and the joint portion of the plug main body may include the column-shaped portion CO, the other may include the joining hole HO, and the connection member 40 may be attached to at least one of the end surface CE of the column-shaped portion CO and the bottom surface HB of the joining hole HO.
  • the material of the joint portion different from the joint portion to which the connection member 40 is attached may be a ferromagnetic body.
  • the cross-sectional shape of the column-shaped portion CO is a circle.
  • the cross-sectional shape of the column-shaped portion CO does not have to be a circle but, for example, may be a polygon or an ellipse. In this case, even though the head member may not be freely rotated, similar to the first to seventh embodiments, the head member is detachably connected to the plug main body.
  • the column-shaped portion CO may include a tapered shape in which the width decreases toward the end surface CE.
  • the joining hole HO includes a tapered shape in which the width decreases toward the bottom surface HB.
  • the joint structure JS includes the plurality of connection members 40.
  • the joint structure JS may include only one connection member 40.
  • a plurality of the plug pieces configuring the plug may be provided.
  • the plug of the present invention is exemplified by the plug used in the piercing machine.
  • the plug of the present invention may be applied to a plug for an elongator. That is, the plug of the present invention can be widely applied to a plug which is used for hot pipe making.
  • a plurality of kinds of plugs were prepared, and a round billet was piercing-rolled using each plug. Moreover, the number of times of rolling (hereinafter, referred to as the number of passes) until each plug was eroded was investigated.
  • Plugs having the structures shown in Table 1 were prepared.
  • Table 1 Mark Plug Structure Material The Number of Passes (Times) Head Member Plug Main Body 1 Integral Type Cr-Ni Based Low Alloy 2 2 FIG. 2 Cr-Ni Based Low Alloy Cr-Ni Based Low Alloy 10 3 FIG. 2 Nb based Alloy Cr-Ni Based Low Alloy 10
  • the plug of Mark 1 had a shape of the outer circumferential surface which was the same as FIG. 2 , the head member and the plug main body were integrally manufactured and could not be separated from each other, which was a configuration of the related art.
  • the material of the plug of Mark 1 was Cr-Ni base low alloy.
  • the plugs of Mark 2 and Mark 3 had a configuration which was the same as FIG. 2 , and the head member and the plug main body could be separated from each other.
  • the head member and the plug main body of Mark 2 and the plug main body of Mark 3 the Cr-Ni base low alloy having a chemical composition which was the same as Mark 1 was used.
  • Nb base alloy having better wear resistance, seize resistance, and erosion resistance than the Cr-Ni base low alloy was used as the head member of Mark 3.
  • the round billet was piercing-rolled using the plugs of Marks 1 to 3.
  • the material of the round billet was a so-called 13 Cr base alloy in which 13 mass% Cr was contained.
  • the diameter of the round billet was 70 mm and the length was 400 mm.
  • the round billet was heated to 1220°C, was piercing-rolled, and a hollow pipe stock having an outer diameter of 74 mm, a thickness of 8.5 mm, and a length of 900 mm was manufactured.
  • the head member was exchanged with a new head member every time two round billets were piercing-rolled (that is, every two passes).
  • the piercing-rolling was continued until the plug main body of the plug of each Mark was eroded. Whether or not erosion of the plug occurred was visually observed every time one round billet was piercing-rolled. When the erosion was observed after piercing-rolling was performed n times, the number of passes was defined as n-1 times.
  • Table 1 The test results are shown in Table 1. As shown in Table 1, the number of passes in the plugs of Marks 2 and 3 was 10 while the number of passes in the plug of Mark 1 was 2. Moreover, in the piercing-rolling using the plug of Mark 2, since the head member could be easily exchanged, a decrease in rolling efficiency was prevented.
EP13830574.3A 2012-08-24 2013-08-16 Plug for hot pipe manufacturing Not-in-force EP2889090B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012185033 2012-08-24
PCT/JP2013/071995 WO2014030593A1 (ja) 2012-08-24 2013-08-16 熱間製管用プラグ

Publications (3)

Publication Number Publication Date
EP2889090A1 EP2889090A1 (en) 2015-07-01
EP2889090A4 EP2889090A4 (en) 2016-03-30
EP2889090B1 true EP2889090B1 (en) 2017-08-09

Family

ID=50149902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13830574.3A Not-in-force EP2889090B1 (en) 2012-08-24 2013-08-16 Plug for hot pipe manufacturing

Country Status (8)

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US (1) US9283600B2 (zh)
EP (1) EP2889090B1 (zh)
JP (1) JP5482976B1 (zh)
CN (1) CN104507594B (zh)
BR (1) BR112015002112B1 (zh)
MX (1) MX350356B (zh)
RU (1) RU2592334C1 (zh)
WO (1) WO2014030593A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6516322B2 (ja) * 2015-03-04 2019-05-22 三菱航空機株式会社 マンドレル
JP7276370B2 (ja) * 2020-04-02 2023-05-18 Ｊｆｅスチール株式会社 継目無鋼管製造用プラグ、継目無鋼管製造用ピアッシングミルおよび継目無鋼管の製造方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815427A (en) * 1929-12-04 1931-07-21 Nat Tube Co Plug bar for tube making machines
US1951087A (en) * 1930-06-19 1934-03-13 Nat Tube Co Expanding plug or mandrel
US3918284A (en) * 1973-04-20 1975-11-11 Youngstown Sheet And Tube Co Seamless tube mill piercer mandrel and assembly
FR2266557B1 (zh) * 1974-04-05 1977-10-14 Valti Fabr Tubes Roulements
SU740318A1 (ru) * 1976-06-08 1980-06-15 Предприятие П/Я В-8173 Дорновое устройство подающего аппарата пилигримового стана
DE3114177C2 (de) * 1981-04-03 1984-08-23 Mannesmann AG, 4000 Düsseldorf Verfahren zum Herstellen eines Arbeitswerkzeuges zur spanlosen Warmverformung von Stahl und Warmarbeitswerkzeug
JPS58167004A (ja) 1982-03-26 1983-10-03 Sumitomo Metal Ind Ltd 継目無管の製造法及びその実施に用るプラグ
JPS60137511A (ja) 1983-12-27 1985-07-22 Nippon Kokan Kk <Nkk> 継目無管製造用プラグ
JPS61177702A (ja) 1985-02-01 1986-08-09 Mitsubishi Electric Corp モ−ルドコイル
JPS61177702U (zh) * 1985-04-22 1986-11-06
JPS62207503A (ja) 1986-03-10 1987-09-11 Nippon Kokan Kk <Nkk> 高合金鋼継目無管製造用プラグ
JPS6395604A (ja) 1986-10-13 1988-04-26 松下電器産業株式会社 感温抵抗器の製造方法
SU1395398A1 (ru) * 1986-11-26 1988-05-15 Предприятие П/Я В-2869 Устройство дл подачи оправки трубопрокатного стана
JP2581154B2 (ja) 1988-05-16 1997-02-12 住友金属工業株式会社 鋼管穿孔機用プラグ
JPH02251304A (ja) * 1989-03-24 1990-10-09 Sumitomo Metal Ind Ltd 穿孔機用プラグ
US5778714A (en) * 1995-05-19 1998-07-14 Nkk Corporation Method for manufacturing seamless pipe
JP2000167606A (ja) 1998-12-04 2000-06-20 Ngk Spark Plug Co Ltd 継目無管製造用プラグに用いるセラミック製先端部材及びこれを用いた継目無管製造用プラグ
DE10024246A1 (de) * 2000-05-17 2001-11-22 Sms Demag Ag Lochdorn zum Schrägwalzen von metallischen Hohlkörpern auf Schrägwalzwerken
CN1929933B (zh) * 2004-03-11 2010-10-13 住友金属工业株式会社 无缝管的穿轧用芯棒、无缝管的制造装置及使用该芯棒和装置的无缝管制造方法
JP4957309B2 (ja) * 2007-03-19 2012-06-20 Ｊｆｅスチール株式会社 継目無鋼管用プラグのバーへの着作業方法およびバーからの脱作業方法
JP2009125785A (ja) * 2007-11-27 2009-06-11 Sanyo Special Steel Co Ltd 継目無鋼管製造用固定プラグ
CN201417132Y (zh) * 2009-03-06 2010-03-03 太原通泽重工有限公司 穿孔机顶头快速更换到位检测系统
CN201357497Y (zh) * 2009-03-16 2009-12-09 秦皇岛老虎重工有限公司 无砟轨道板模具锚垫板固定结构

Also Published As

Publication number Publication date
US20150183010A1 (en) 2015-07-02
CN104507594A (zh) 2015-04-08
EP2889090A1 (en) 2015-07-01
RU2592334C1 (ru) 2016-07-20
CN104507594B (zh) 2016-05-11
EP2889090A4 (en) 2016-03-30
BR112015002112A2 (pt) 2017-07-04
US9283600B2 (en) 2016-03-15
MX350356B (es) 2017-09-05
WO2014030593A1 (ja) 2014-02-27
JP5482976B1 (ja) 2014-05-07
MX2015001435A (es) 2015-05-15
BR112015002112B1 (pt) 2021-08-31
JPWO2014030593A1 (ja) 2016-07-28

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